Scroll to navigation

PCI_REQUEST_REGIONS_(9) Hardware Interfaces PCI_REQUEST_REGIONS_(9)

NAME

pci_request_regions_exclusive - Reserved PCI I/O and memory resources

SYNOPSIS

int pci_request_regions_exclusive(struct pci_dev * pdev, const char * res_name);

ARGUMENTS

pdev
PCI device whose resources are to be reserved
res_name
Name to be associated with resource.

DESCRIPTION

Mark all PCI regions associated with PCI device pdev as being reserved by owner res_name. Do not access any address inside the PCI regions unless this call returns successfully.
pci_request_regions_exclusive will mark the region so that /dev/mem and the sysfs MMIO access will not be allowed.
Returns 0 on success, or EBUSY on error. A warning message is also printed on failure.

COPYRIGHT

January 2017 Kernel Hackers Manual 4.8.